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Radiant|Natural|GIA

1.50ct K SI1 Radiant Natural Diamond

EX • K/SI1 • GIA 7558451105

Certificate GIA 7558451105

Diamond specifications and retailer prices

From $4,992 AUD
As of November 7, 2026
Save $4,049 AUD (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $9,041 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7558451105. Listed at 11 retailers as of November 5, 2026, with prices from $4,992 to $9,041, a $4,049 spread on the same certified stone. NZ Jewellers lists it at $9,041. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7558451105
Dimensions7.75 × 5.36 × 3.81 mm
L/W Ratio1.45
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Pinpoint
Top View
7.75 mm5.36 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7558451105
Side View
Table 64.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 71.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 7
Current: $9,041 AUD|Low: $4,992 AUD|High: $9,041 AUD|Avg: $6,145 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 3$4,992 AUD
Retailer 4$5,034 AUD
Retailer 8$5,189 AUD
Retailer 10$5,189 AUD
Retailer 2$5,369 AUD
Retailer 11$5,388 AUD
Retailer 9$5,988 AUD
Retailer 5$6,040 AUD
Retailer 6$6,334 AUD
Retailer 7$8,654 AUD
NZ Jewellers$9,041 AUD

33 data points across 11 retailers

11 retailers$4,992 AUD to $9,041 AUD

A
Cheapest Retailer
-
$4,992 AUD
A
Retailer 2
-
$5,034 AUD
View
Retailer 3
-
$5,189 AUD
View
Price last confirmed 13 days ago
A
Retailer 4
-
$5,189 AUD
View
A
Retailer 5
-
$5,369 AUD
View
B+
Retailer 6
-
$5,388 AUD
View
B+
Retailer 7
-
$5,988 AUD
View
B+
Retailer 8
-
$6,040 AUD
View
B+
Retailer 9
-
$6,334 AUD
View
B
Retailer 10
-
$8,654 AUD
View
Most Expensive
B
NZ Jewellers
1930ef7e-aff1-4fa7-af8f-e59a4e7b45cd · Nov 5
$9,041 AUD
$6,212 USD
View
10 more retailers have this diamond
Prices start from $4,992 AUDSave up to $4,049 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.50ct Radiant
$4,992 AUD